Answer: 2.1, I don't really know how to show a model for this, its just that when you multiply 3 and 7 you get 21, when you do 0.7 and 3, you just put the decimal place between the 2 and 1.
Answer:
√14 and √42. hope this helps.
I don't know what I've been told
Answer:
.
Step-by-step explanation:
